Turntable center



July 5, 1927. T

C. M. GOODRICH TURNTABLE CENTER Filed Dec. 23. 1926 4 Sheets-Sheet 1Witnesses: 176009768277:

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July 5,1927. 1,634,417

C, M. GOODRICH TURNTABLE CENTER Filed Dec. 25, 1926 4 Sheets-Shem 4Patented July 5, 1927.

UNITED STATES PATENT OFFICE.

GHAUNGEY MARSH GOODRICH, OF WINDSOR, ONTARIO, CANADA.

TURNTABLE CENTER.

Application fiIed December 23, 1926,. Serial No. 156,687, and in CanadaApril, 2, 1925.

The invention relates to certain new and useful improvements in railwaylocomotive turntables and like structures, and has special reference tothe center upon and about which such turntables are supported andturned.

An object of the invention resides in the provision of a practical,simple, efficient center hearing or pivot of such design that therotating portion of the center may be removed vertically, after whichthe other members forming the mechanism or structure may bedisassembled, inspected, cleaned or repaired and reassembled without thenecessity of jacking up the main girders any more than necessary merelyto take the weight of such main girders.

Another object of the invention resides in the provision of a center offew and simple members inexpensive in material and requiring but littlelabor in their manufacture with the members of the center so arranged asto enable. the wearing parts such as the tool steel disks, the bronzedisks and friction collar to be readily removed and it necessary to bereplaced, without removing the base bearing member.

The invention has for a further object the provision of a center ofthecharacter stated to enable turntables which rest at their endsupon thecircle rail, to have their centers opened for inspection, cleaning orrepairing,

without reducing the loads carried upon the,

circle rails.

The invention has for a further object the provision of a center ofextreme compactness and in which the rocking point will be at arelatively high point and thus make possible the use of shallow pits forturntables or-more eliicient details in pits of the usual depth, thecenter being of such construction that the height thereof may be readilyadjusted vertically to compe-nsate tor errors in setting the centerfoundation, or for subsidence thereof, or othcrreasons the center orpivot also being stable under all working conditions and securedagainst, horizontal loads or shocks whether acting in the direction ofthe axes of the main girders or normal thereto.

V The invention has for a still further object the provision of a centerincluding a base member with a. broadly spread lower surface restingupon concrete masonry or other supporting means; atop recess to hold abronze disk and optionally provided with casting or support memberresting upon the friction disks, an upper member preferably of caststeel and having its lower surface bearing upon the friction disks andso fitted at its top as'to engage with the member which supports theturntable proper, the upper member or top span sup-porting memher beingso related to the span as to make possible its vertical withdrawal andthe subsequent easy disassembling of the other component parts of thecenter or pivot.

WVith the foregoing and other objects in View, as will appear as thedescription procoeds, the invention consists in the novel construction,combination and arrangement of cooperating elements as shall hereinafterbe more specifically set forth, claimed and shown in the accompanyingdrawings forming part of the present application and in which Figure 1is a cross-section of a turntable showing center transverse girders andthe center orpivot and wedges with which the center girders areprovided.

Figure 1 is a segmental plan of the center structure shown with part ofthe upper members cut away to show the upper face of the lower or basemember.

Figure 2 is a transverse vertical section substantially on the planeline 11-11 of Figure 1 looking in the direction indicated by the arrows,the center structure being shown partly in elevation.

Figure 3 is a view similar to Figure 1, showing a slightly modified formof the invention.

Figure 4 is a transverse vertical section substantially on the plane ofline IV-IV ot Figure 3, looking in the direction indicatedby the arrowsand showing the center structurepartly in elevation.

Figure 5 is a view similar to Figures 1 and- 3 showing a furthermodified form of the invention. 7

Figure 6 is a transverse vertical section substantially on the plane ofline VI-VI of Figure 5 looking in the direction indi cated by the arrowsand showing the center structure partly in elevation.

Figure? is an elevation of a turntable structure with the improved formof center employed therein and showing the manner of removing the upperor rotating portion of the center vertically.

other lubricant admitted through the pipe 16 into the cavities provideda t- 1'? in the net-1t higher member 18 ot the cent or pivot Suitablegrooves :tor the distributirm ot the oil between the :trictiou reducingdisks 14: and 15 are provided in the latter with their edges carefullyrounded so that when disks 1.4 and 15 are revolviim the tendency is forthe oil to be drawn in between the contacting disks 141: and 15, Thebase member 10 also has an upwardly extending pin or pintle 19 which ishushed by a bronze collar 20. Against this collar 20 the pintle 19 istaken the thrust from either or both disks 14 and 15 and fron'i theupper member 18. Friction is m nimized by providing the tool steel andbronze disks 15 and 14: letween which movement takes place and which arepreferably keyed respectively, to the upper member 18 and the lowerlined base member 10 by studs or dowels i l"; ()il in y be held up tothe level of the top or the base member 10 and one of the features ofthis invention is the provision 0t storage specs 17 for oil within themember 18 next above the base.

A circular wall 21 is the base member 10 supports the Hat top surtace12and is extended to term thepintle 19 previously men-- tioned which hasoptionally at the center hole 22, whichhole is preferably continuedupwards through the center of the members 18 and 23 to altord a passagefor electric cables or for other cables or ducts as in the case oi air,for bringing in power tor the operation of the turntable. This verticalpassage or hole 22 is provided Where the power is brought in from belowthe turntable. i

The base member 10 is stationary while the member 18 rotates thereonreceives its load from the upper member or block 23 (previously referredto) and transfers it through its base to the disk 15. The member 18 isheld against he 'izontal motion in any direction by the central pintle19 and bronze collar 20. v

The member or block 23 is preferably formed oi cast steel, and receivesits lead from wedge keys 2 l preferably two in numher, as shown inFigures 1 and and transfers its lead to the member 18 by means of a keyportion 27, which latter is preferably rounded at its bottom so as topermit slight changes of level of the main girders 28 in a verticalplane through the axes' The members 23 and 18 so engage when contactingas to prevent lateral motion of either one with respect to the other.This is preferably accomplished by having the key 27 integral with thetop member or block 23, as showmbut it is apparent that the key 2'? maybe made integral with the lower member 18, or the key may be madeseparate, it desired, and of any practical shape. The member 23 is madestable laterally of the center transverse girders 28 by the length ofhearing as shown in Figure 1 and by the spread of the wedge keys 24.

The wedge keys 24L and the block 23 are keyed againstmovementtransversely of the turntable by engaging lugs 29 or by otherappropriate means. Longitudinally of the table, movement between thewedge keys 24 and the block 23, is prevented by the block bearing at thepoint 30, wherea filler is optionally provided in the transverse girders28 at the point where the block 23 abuts.

In the term of the invention disclosed in Figures 3 and 1, pins 25,preferably two in number, are employed in place of the wedge keys 24shown in the first form. The pins 25 are extended transversely throughthe center transverse girders 28 and restin appropriate recesses orpockets provided there for in the engaging lugs 29 of the block, 23.

A diaphragm 26 is employed in the term shown in Figures 5and 6 in placeof either the wedge keys 2 1 or pins 25. Thediaphragm 26 is supportedbetween the center transverse girders 28 on bolts 26 extendedtherethrough. and through the center trans verse girders 28 asillustrated or by other appropriate means. The diaphragm 26 is sopositioned as to permit the lower edge thereof to rest firmly on theupper edge portion of the block 23 and engage inappropriate recesses erpockets provided for this purpose in the block 23. This should beclearly understood by referring to Figure 6 of the drawings. Itpreferred, the block 23 may be formed with the diaphragm 26. i

It will be seen in each ot the forms shown in the drawings that theblock 23 is'cut away at its center upper surface to confine thebear-ingot its leading means to that portion of its top surface adjacentto the cross girders 28. An eye or book 31 is provided in the upper cutaway portion of the block 23 to hook a tackle to when it is desired toelevate it a lter the load transferring means such as wedge keys 2%,pins'25, or diapliragms 26 has been removed theother end of the tacklebeing secure to the elevatingcable support 32, as illustrated'in Figure7, after which the top member or block-23 of the center or pivot may bereadily removed vertically. Such vertical removal of the block 23 is animportant feature of this invention as it enables all other, members ofthe center or pivot to be disassembled without jacking the main girders28 vertically any further than suiticient to transfer load to the jacksfrom the center or pivot. WVhile one method of removing the top memberor block 23 vertically is illustrated in Figure it is to be understoodthat other appropriate means may be employed for this pur pose.

It is believed. the complete construction and operation of thisinvention aswell as the advantages of the same over previous structureof this character may now be apparent from the foregoing paragraphstaken in connection with the accompanying drawings without furtherdetailed description.

While the preferred embodiment of the invention has been disclosed, itis to be understood that minor changes in the details of construction,combination and arrangement of cooperating elements may be resorted towithin the scope of what is claimed without departing from the spirit ofthe invention.

1 claim 1. A turntable structure, including two transverse girders witha top casting secured therebetween and so recessed and held in a middlecasting as to keep the turntable concentric with the center of thecasting.

2. A turntable structure, including a top casting recessed in a middlecasting engaging therewith in such a manner as to permit a smallrotation of the top casting about an axis transverse to the maingirders, but preventing rotation of the top casting and the turntable asa whole about an axis parallel to the main girders.

3. A center or pivot bearing for a turntabie structure, including avertically removable upper center bearing block and a transverselyadjustable and removable turntable-height-adjusting bearing wedgecarefully resting on the vertically removable upper center bearingblock.

4. In a turntable center or pivot bearing, provision for adjusting theheight of the structure by means of a vertically removable upper centerbearing block and a wedge shaped bearing carefully resting on thevertically removable upper center bearing block.

5. In a turntablestructure, a plurality of center transverse girders, acenter bearing, andremovable means extended through the centertransverse girders for loading the same on to the center bearing.

6. In a turntable structure, a center bearing composed of upper andlower units with an intermediate unit therebetween, center transversegirders, and removable load sup porting means extended through saidcenter transverse girders and removably resting on said upper unit,whereby the latter may be removed, vertically between said centertransverse girders after removal of the load supporting means.

7. A turntable structure, including a base center bearing member, anintermediate member rotatable on said base center bearing member, anupper block resting on said intermediate member, transverse centergirders, and removable load supporting means between said transversecenter girders to rest removably on said upper block,

whereby the block may be removed verti cally between said centertransverse girders after removal of said load supporting means. a

8. A turntable structure, including a base center bearing member, anintermediate member rotatable on said base center hearing member, anupper block resting on said intermediate member, transverse centergirders and removable load supporting means between said transversecenter girders to rest removably on said upper block, whereby the blockmay be removed vertically between said center transverse girders afterremoval of said load supporting means, said base and intermediatemembers having cooperating flanges at their opposed portions to preventlateral movement of said intermediate members, and friction reducingdisks arranged between said base and intermediate members.

In testimony whereof, I have hereunto signed my name.

CHAUNCEY MARSH GOODRICH.

